Naoki Kosugi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fire detector and noise de-influence method
- Patent number 6,329,922
- Issue date Dec 11, 2001
- Hochiki Kabushiki Kaisha
- Naoki Kosugi
- G08 - SIGNALLING
Information Patent Grant
Fire monitoring system and fire sensor
- Patent number 6,204,768
- Issue date Mar 20, 2001
- Hochiki Corporation
- Naoki Kosugi
- G08 - SIGNALLING
Information Patent Grant
Fire sensor and fire detecting method
- Patent number 6,154,142
- Issue date Nov 28, 2000
- Hochiki Corporation
- Naoki Kosugi
- G08 - SIGNALLING
Information Patent Grant
Photoelectric smoke detector and disaster monitoring system using t...
- Patent number 5,859,706
- Issue date Jan 12, 1999
- Hochiki Kabushiki Kaisha
- Tetsuya Nagashima
- G08 - SIGNALLING
Information Patent Grant
System for monitoring disaster prevention
- Patent number 5,619,184
- Issue date Apr 8, 1997
- Hochiki Corporation
- Yasuo Torikoshi
- G08 - SIGNALLING
Information Patent Grant
Photoelectric smoke sensor and fire detecting system, and sensitivi...
- Patent number 5,497,009
- Issue date Mar 5, 1996
- Hochiki Corporation
- Yasuo Torikoshi
- G08 - SIGNALLING
Information Patent Grant
Photoelectric smoke detector with expanded visual field
- Patent number 5,302,837
- Issue date Apr 12, 1994
- Hochiki Corporation
- Hiroshi Sawa
- G08 - SIGNALLING